write with my left hand

wikihow.com has a little how-to on this topic. You’ll see it if you type “left handed” or “left hand” or something of the sort into the search bar.

I’ve been trying. It’s been almost 6 months already. I can write left handed alright, but it’s still messy and backslanted. I find it useful to do everyday things left handed as well, which really trains your left hand. That includes eating, brushing your teeth, using the mouse, and of course writing. It’ll be really difficult at first, but at the end you’ll be doing it and you won’t even know it! If there are left handed people around you could observe them whenever they use their left hand. You may even wish to talk to them about this topic if it helps. Above all, buying left handed items would greatly help your progress. Try to do essentially everything left handed. After all, practice makes perfect.